A kind of central heating terminal balance adjustment method

Abstract

The invention discloses a concentrated heat supply tail end balance adjusting method. The method is characterized in that all users in the same community are divided zones according to house attribute, the most unfavorable house is placed in the highest area, then the rest can be done in the same manner, and the flow of the highest area is preferentially opened to largest for meeting the user withthe most unfavorable house; then an average water return temperature of the highest area is taken as a benchmark, and water return temperature reference values of other zones are set as appropriate;then the user compares the water return temperature of the house with the water return temperature reference value of the own area, according to the comparison, electric balance control valve gears ofall the users are controlled and adjusted; and the whole heat supply system can reach an optimal state through multiple adjustment and correction. According to the method, the fine adjustment of eachhouse under the same heat exchange station can be realized.

Description

technical field [0001] The invention belongs to the field of central heating system control, in particular to a central heating terminal balance control method. Background technique [0002] In residential heating, multi-storey or high-rise buildings designed for building heating, users who are heated by the same group of standpipes will cause inconsistencies in heat dissipation due to differences in the house type structure, area size, floor height, and location orientation , and this deviation is very obvious, making the residents' heat supply unbalanced. For example: traditional household parallel heating users often have the lowest temperature on the first floor and the top floor, followed by the second floor, and the highest on the middle floor; users on the shady side have low room temperature, and users on the sunny side have high room temperature; users on the same floor have different areas, but users with large areas The room temperature is low, and users with sma...

AI Technical Summary

Problems solved by technology

The disadvantages are: the establishment of various models mentioned in this document belongs to the ideal state, and the heat load of each end user varies greatly depending on the physical location

Because the adjustment of the water supply and return pressure difference of the central heating main pipe will involve changes in the entire heating system, and at the same time bring about changes in all electric two-way valves. In fact, there should be a lot of electric two-way valves operating on the entire system at this time. , it is difficult to reach a balance in a short period of time, and it will have a short-term impact on the circulation pump of the heating system and the water system; or due to changes in the indoor environment parameters set by some end users, this phenomenon will also be caused

[0004] Chinese Patent Application No. 2017104163711 discloses a central heating method and system that actively and dynamically adjusts according to the needs of residents. It is mainly aimed at the situation that when the heating is metered by household, the user closes the valve and the heating company cannot adjust the flow

The heating zone described in Chinese Patent Application No. 2017104163711 can be a building or a unit, but there are at least two heating users in the zone. This kind of dynamic adjustment is a kind of extensive adjustment, which belongs to the adjustment of the building unit. Each zone is set with a cycle Pumps, the increase in investment is very large and the power consumption increases significantly, which is not conducive to energy saving and consumption reduction

This kind of dynamic adjustment does not take into account the problem of vertical imbalance of the building. Although the flow of the partition is dynamically adjusted, the flow of each user in the partition is not the same. Because of the height of the building and the large area difference, there will be vertical proximity In the case of the vertical end and the vertical far end, when the thermal state of the vertical near-end user changes, the dynamic balance device will notify the adjustment device to adjust the circulation pump, and then adjust the new flow of the partition, which may cause the flow of other users to follow suit. If there is a change, and the heat flow of vertical remote users may be insufficient, it is impossible to ensure that the indoor temperature of each heat user in the zone reaches the standard

In addition, the secondary network of the heat exchange station is also divided into near-end and remote-end. Because the operating frequency of the circulation pump in each partition is different, it may cause the entire secondary network heating system to be unbalanced.

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